Since the release of Gemini 3 and Nano Banana Pro, AI-generated images have become insanely realistic and it’s only going to get better to the point where we won’t even be able to tell what’s real anymore
But dont panic we got a way to differentiate (kinda) AI images created using GEMINI from the real ones humans click.
We can use Google Lens and do a reverse search or use the Gemini app itself and ask if it AI generated or not
Dont get me wrong it works (obviously exceptions exists)
How is it done ?
Lets take this hyper realistic image I created using Gemini 3
Now lets do a reverse search on that
After uploading it on Lens let's click on About this image
AND VOILAA
Additionally you can use the very own GEMINI you have used to create the AI image, just ask halo, is this ai ?
If you had noticed, it's using SynthID to identify if the image is AI or not and not the visible watermark at the bottom
Tech behind the identification and it's limitation
The main question, Whats SynthID ?
SynthID is an invisible digital watermark from Google DeepMind that's embedded into all the images created using Gemini.
So when you ask Gemini or do a reverse search on lens they just look up the synthID present in the image and comes to a conclusion if its an AI generated or not
The watermark is kinda robust and will stay intact against minor to moderate edits, resize or compression.
And the last point from other POV gives you the limitation, if youre someone who knows how to edit the image well enough then there’s a good chance Gemini won’t be able to detect the SynthID watermark anymore.
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